fixed some warning under VS2008

modules/features2d/src/descriptors.cpp

@@ -196,7 +196,7 @@ void convertBGRImageToOpponentColorSpace( const Mat& bgrImage, vector<Mat>& oppo
         MatConstIterator_<char> rIt = bgrChannels[2].begin<char>();
         MatConstIterator_<char> gIt = bgrChannels[1].begin<char>();
         MatIterator_<char> dstIt = opponentChannels[0].begin<char>();
-        float factor = 1.f / sqrt(2.0);
+        float factor = 1.f / sqrt(2.f);
         for( ; dstIt != opponentChannels[0].end<char>(); ++rIt, ++gIt, ++dstIt )
         {
             int value = static_cast<int>( static_cast<float>(static_cast<int>(*gIt)-static_cast<int>(*rIt)) * factor );
@@ -211,7 +211,7 @@ void convertBGRImageToOpponentColorSpace( const Mat& bgrImage, vector<Mat>& oppo
         MatConstIterator_<char> gIt = bgrChannels[1].begin<char>();
         MatConstIterator_<char> bIt = bgrChannels[0].begin<char>();
         MatIterator_<char> dstIt = opponentChannels[1].begin<char>();
-        float factor = 1.f / sqrt(6.0);
+        float factor = 1.f / sqrt(6.f);
         for( ; dstIt != opponentChannels[1].end<char>(); ++rIt, ++gIt, ++bIt, ++dstIt )
         {
             int value = static_cast<int>( static_cast<float>(static_cast<int>(*rIt) + static_cast<int>(*gIt) - 2*static_cast<int>(*bIt)) *
@@ -227,7 +227,7 @@ void convertBGRImageToOpponentColorSpace( const Mat& bgrImage, vector<Mat>& oppo
         MatConstIterator_<char> gIt = bgrChannels[1].begin<char>();
         MatConstIterator_<char> bIt = bgrChannels[0].begin<char>();
         MatIterator_<char> dstIt = opponentChannels[2].begin<char>();
-        float factor = 1.f / sqrt(3.0);
+        float factor = 1.f / sqrt(3.f);
         for( ; dstIt != opponentChannels[2].end<char>(); ++rIt, ++gIt, ++bIt, ++dstIt )
         {
             int value = static_cast<int>( static_cast<float>(static_cast<int>(*rIt) + static_cast<int>(*gIt) + static_cast<int>(*bIt)) *

modules/features2d/src/evaluation.cpp

@@ -229,7 +229,7 @@ struct IntersectAreaCounter
         {
             float rx1 = minx + i*dr;
             float rx2 = rx1 - diff.x;
-            for( float ry1 = miny; ry1 <= maxy; ry1 += dr )
+            for( float ry1 = (float)miny; ry1 <= (float)maxy; ry1 += dr )
             {
                 float ry2 = ry1 - diff.y;
                 //compute the distance from the ellipse center
@@ -276,6 +276,7 @@ struct SIdx
         UsedFinder(const SIdx& _used) : used(_used) {}
         const SIdx& used;
         bool operator()(const SIdx& v) const { return  (v.i1 == used.i1 || v.i2 == used.i2); }
+        UsedFinder& operator=(const UsedFinder&);
     };
 };
 
@@ -312,14 +313,14 @@ static void computeOneToOneMatchedOverlaps( const vector<EllipticKeyPoint>& keyp
             {
                 EllipticKeyPoint keypoint2a = EllipticKeyPoint( kp2.center, Scalar(fac*kp2.ellipse[0], fac*kp2.ellipse[1], fac*kp2.ellipse[2]) );
                 //find the largest eigenvalue
-                int maxx =  ceil(( keypoint1a.boundingBox.width > (diff.x+keypoint2a.boundingBox.width)) ?
+                int maxx =  (int)ceil(( keypoint1a.boundingBox.width > (diff.x+keypoint2a.boundingBox.width)) ?
                                      keypoint1a.boundingBox.width : (diff.x+keypoint2a.boundingBox.width));
-                int minx = floor((-keypoint1a.boundingBox.width < (diff.x-keypoint2a.boundingBox.width)) ?
+                int minx = (int)floor((-keypoint1a.boundingBox.width < (diff.x-keypoint2a.boundingBox.width)) ?
                                     -keypoint1a.boundingBox.width : (diff.x-keypoint2a.boundingBox.width));
 
-                int maxy =  ceil(( keypoint1a.boundingBox.height > (diff.y+keypoint2a.boundingBox.height)) ?
+                int maxy =  (int)ceil(( keypoint1a.boundingBox.height > (diff.y+keypoint2a.boundingBox.height)) ?
                                      keypoint1a.boundingBox.height : (diff.y+keypoint2a.boundingBox.height));
-                int miny = floor((-keypoint1a.boundingBox.height < (diff.y-keypoint2a.boundingBox.height)) ?
+                int miny = (int)floor((-keypoint1a.boundingBox.height < (diff.y-keypoint2a.boundingBox.height)) ?
                                     -keypoint1a.boundingBox.height : (diff.y-keypoint2a.boundingBox.height));
                 int mina = (maxx-minx) < (maxy-miny) ? (maxx-minx) : (maxy-miny) ;
 

modules/gpu/FindNPP.cmake

@@ -86,7 +86,7 @@ if(NOT EXISTS ${CUDA_NPP_LIBRARIES} OR NOT EXISTS ${CUDA_NPP_INCLUDES}/npp.h)
 	if(NPP_FIND_REQUIRED)
 		message(FATAL_ERROR "NPP headers/libraries are not found. Specify CUDA_NPP_LIBRARY_ROOT_DIR.")
 	elseif(NOT CUDA_FIND_QUIETLY)
-		message("NPP headers/libraries are not found or CUDA_NPP_LIBRARY_ROOT_DIR not specified.")
+		message("NPP headers/libraries are not found. Please specify CUDA_NPP_LIBRARY_ROOT_DIR in CMake or set $NPP_ROOT_DIR.")
 	endif()	
 else()